Insert data into a smart large object

The following code inserts data into a smart large object:

String s = "insert into large_tab (col1, col2) values (?,?)";
pstmt = myConn.prepareStatement(s);

file = new File("data.dat");
FileInputStream fin = new FileInputStream(file);

byte[] buffer = new byte[200];;

IfxLobDescriptor loDesc = new IfxLobDescriptor(myConn);
IfxLocator loPtr = new IfxLocator();
IfxSmartBlob smb = new IfxSmartBlob(myConn);

// Create a smart large object in server
int loFd = smb.IfxLoCreate(loDesc, smb.LO_RDWR, loPtr);
System.out.println("A smart-blob has been created ");
int n = fin.read(buffer); 
if (n > 0)
n = smb.IfxLoWrite(loFd, buffer);
smb.IfxLoClose(loFd);

System.out.println("Wrote: " + n +" bytes into it");
System.out.println("Smart-blob is closed " );

Blob blb = new IfxBblob(loPtr);
pstmt.setInt(1, 2);  // set the Integer column
pstmt.setBlob(2, blb); // set the blob column
pstmt.executeUpdate();
System.out.println("Binding of smart large object to table is 
   done");

pstmt.close();
smb.IfxLoRelease(loPtr);
System.out.println("Smart Blob Locator is released ");